Does my EV's butt look big in this? Rinspeed's range-extending "Dock+Go" concept

Rinspeed is renowned for producing exotic concept vehicles for the Geneva Motor Show each year - the aquatic sQuba and shape-shifting iChange being two prime examples - and the 2012 show looks like it will be no exception. We've seen external battery packs designed to increase the battery life of a smartphone, and now Rinspeed's "Dock+Go" concept brings the same idea to electric vehicles in the form of a vehicular backpack that docks to the rear of an electric vehicle to extend not only their range, but also their cargo-carrying capabilities.

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